The children's ride-on suitcase pitched on the British programme Dragons' Den by Rob Law was Trunki.
Trunki is a hard-shell children's suitcase designed so that a child can sit on it and ride while travelling. Designer and entrepreneur Rob Law presented the product on Dragons' Den, seeking investment to help develop and market the idea. The pitch became notable because the dragons did not invest, yet the product later achieved substantial commercial success.
The Trunki story is often used as an example of the difference between a television outcome and a company's later performance. A rejection on the programme does not necessarily mean that a product will fail in the market.
Trunki is the brand name, while ride-on suitcase is the product category. It should not be confused with ordinary children's luggage or with wheeled scooters, which are separate products.